Anti erosion measures at different reaches Kadamtola Adibashi Chuba Bholichuba from river Kawadanga on its banks under RIDF NABARD-XXV

Amount

Earthwork in bank trimming to the designed section/ slope including removing the soils at a safe distance complete as directed.

Supply of Geo textile bags of type –A (1.03 × 0.70 m) made of Geo textile non-woven fabric sheets of 400 GSM manufactured from 100% virgin Polypropylene (PP) fiber having thickness not less than 3.00 mm with minimum properties as (i) Tensile strength (CD) ≥ 24 Kn/m (ii) Tensile strength (MD) ≥ 22 KN/m (ii) Mass ≥ 400.00 Gm/m2 (iii) CBR Puncture strength ≥ 4100 N/m2 (iv) Elongation @ break (Warp) ≥ 54% (v) Elongation @ break (Weft) ≥ 52% (vi) Abrasion ≥ 70% (vii) UV Resistance @ 500 hours ≥ 70% (viii) AOS ≤ 75 micron (ix) Permittivity ≥ 1.25, (x) Trapezoidal Tear Strength ≤ 520 N (xi) Permeability = 45 Lt/m2/sec (xii) Seam strength = 80% of geo textile strength, Stitching of bag should be Ring Spun Yarn stitches with 2500-3000 denier double line chain stitch with overlap with stitches along the edge @ minimum 15 stitches per 100 m.(Bags are to be supplied of 100 numbers or part in a bundle, properly packed with name of manufacturer and batch Number is to be marked on each bag with WRD Govt. Assam to be printed on each bag and mentioning properly the GSM and type of Geo bag polymer. Test Certificate from approved NABL accredited and ISO Certified Laboratory should invariable be submitted against each batch of material). Including carriage of Geo from to work site @Rs 2.17

Carriage of geo bags of size 1.03 x 0.70 m including loading & unloading, stacking cost of P.O.L. etc. complete and including hire charge of truck with driver and handyman complete s directed (Distance to be calculated with respect to FOR Guwahati)

Supply of galvd. W.N. sheets of 8G.wire of 152mm.(6”) square mesh in each sheet of overall size 2.57m.x1.66m.(8’- 6' x 5, - 6') including 76mm. projection of eachwire on all sizes beyond the net size of 2.42m.x 1.31m (8'-0" x 5'-0") having knots of 12G at every joint including loading /unloading and stacking properly complete as directed by the Deptt. (Weight of each sheet should not be less than 6.30Kg).

Supply of sewing tread/yarn PPMF stitching thread (2000 Den) Kaplon including paymnet of taxes (inclusive of labour cess 1%)

Collection and supply of river silt by truck carriage free from debries and other foreign material payment of forest royalty if any etc. (For intial lead beyond 1/2 Km and upto 4.00km for all lifts)

Filling and laying of Geo bags of size 1.03m X 0.70m excluding excavation of specified silt from flood plain or adjacent chars within a distance of 90m of the work site, filling geo bags with silt having minimum weighing 126.00 Kg and minimum volume 0.084 cum after filling ,double locking chain stitching the mouth of the filled bags with polypropylene thread by power driven double needle double stitched machine, stacking the same in batches of 100, carrying the same to the dumping site including all handling charges and local carriage within a distance of 150m and laying properly as directed. (Geo Bag and Polypropylene thread will be supplied by the department free of cost)

Filling and laying in cage with silt filled Geo bags of size 1.03m X 0.70m excluding excavation of specified silt from flood plain or adjacent chars within a distance of 90m of the work site, filling geo bags with silt having minimum weighing 126.00 Kg and minimum volume 0.084 cum after filling ,double locking chain stitching the mouth of the filled bags with polypropylene thread by power driven double needle machine, stacking the same in batches of 100, carrying the same to the dumping site including all handling charges and local carriage within a distance of 150m and laying properly. in cages made of wire netting sheets of size 2.57x1.66m of 8G galvanized wire making the cage from 2 nos. of wire netting sheet by tying the projected wires complete as directed. (Geo Bag , Wire Netting Sheets and Polypropylene thread will be supplied by the department free of cost) Without Boat

RAJENDRA CHAUDHURY

SRI TIRTHA RAM BORO